Interchangeable blowpipe.



R. FITZSIMMONS.

INTERGHANGBABLB BLOWPIPE.

APPLICATION FILED JAH. Z4, 1907.

Patented Sept. 15, 1908.

WITNESES:

ATTO RN EY UNITED sTATns ROBERT FITZSIMMONS, OF PHILADELPHIA,

PENNSYLVANIA, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO CORNELIUS D.FITZSIMMONS, OF PHILADELPHIA, PENN- SYLVANIA.

INTERCHANGE ABLE BLOWPIPE Specification of Letters Patent.

Patented sept. 15, 1908.

Application filed January 21,1, 1907. Serial No. 353,761.

To all whom it may concern.'

Be it known that I, ROBERT FiTzsIMMoNs, a citizen of the United States,residing at Philadelphia, county of Philadelphia, and State ofPennsylvania, have invented a certain new and useful Improvement inInterchangeable Blowpipes, of which the following is a specification.

My invention relates to a new and useful improvement called theinterchangeable blow pipes, and has for its object to provide anexceedingly simple and effective arrangement of this description forusing oxygen, hydrogen and air or ordinary illuminating gas or acetylenegas by means of which an intensely hot flame of small dimensions may beprojected against sheet metal or the like for burning the same intosections upon lines, or for burning holes in sheet metal plates orboilers, and which may be also used for lead burning, brazing, solderingor the like.

With these ends in view, this invention consists in the details ofconstruction and combination of elements hereinafter set forth and thenspecifically designated by the claims.

In order that those skilled in the art to which this inventionappertains may understand how to make and use the same, I will describeits construction in detail, referring by letter to the accompanyingdrawing forming a part of this specification, in which- Figure 1 is aside elevation of my improved blow pipe, a portion being sectioned. Fig.2, an end view. Fig. 3, a section at the line X of Fig. 1. Fig. 4, adetail view of the various shaped pipes, which may be interchanged withthose shown in Fig. 1.

I-Iead A, is composed of two s aced members A each having a air of tiesaid as! sages F, therein adjacent the ends thereof, these members beingconnected by the central web A in which passage B is formed.

In carrying out my invention as here embodied, A represents the stock orhead of the device, having an air passage B formed therein, the innerend of this passage is threaded to receive a suitable coupling D forattaching a flexible tube, while the outer end of this passage is alsothreaded to receive pipe C terminating in the burner E. The head hasfour tubular passages F formed therein, each of which has threadedthereto a coupling G, by means of which flexible tubes may' be attachedthereto, and these passages are arranged in pairs, each pair convergingso as to form a single passage H, the ends of which are threaded, asindicated at I to receive one or the other of the pi es J or K, whichterminate in the burners and K respectively, by which arrangement twokinds of gas or gas and air may be admitted to either of the passages H,and from thence forced through the burners J and K', and likewise air orany desired gas may be forced through the pipe B and burner E, and asthese burners are arranged as shown in Fig. 1 so as to cause the gasesand air issuing therefrom to converge to a common point, the properregulation of the flow of the gases will produce any desired flame, andthis flame may be made long or thin, and of intense heat, by means ofwhich a sheet metal plate may be severed on any desired line as rapidlyas the operator can pass the flame along the line. The pipes L, L2, andL3 may be substituted for the pipes K or J so as to bring the burners inany desired position relative to the head or stock, thus adapting thetool for various kinds of work such as brazing, welding, dressing,cutting iron or steel plates, shafting, bars or other shapes. Also forcutting round or square holes out of sheet metal or pipes.

Having thus fully described my invention, what I claim as new anduseful, is-

1. A blow pipe composed of a head vformed of two members spaced apartand each provided with a pair of passages arranged adj acent the endsthereof, a centrally arranged connecting web connected to said members,each pair of said passages being inclined towards one another andmerging into a single passage, said web being formed'with a singlecentral passage which extends throughout the length of said head and isdisposed between said single passages, each of said single passages andsaid passage of the web being threaded at their rear ends, and acoupling secured to the front end of said passage of the web and to eachof said pairs of passages.

2. A blow pipe composed of a head formed at one end with a centralpassage which extends through its length and with two separate pairs ofpassages arranged on opposite sides of said centraIpassage, the passagesof each pair of passages being inclined towards In testimony whereof, Ihave hereunto aiixed my signature 1n the presence of two subserlblngWitnesses.

one another and meeting to join and form a single passage at a pointsubstantially nnd- Way ot the length of sald head, said single passagesbeing Continued and extending ROBERT FITZSIlN/IONS. through the rear ofsaid head, whereby there Witnesses:

are five passages at one end of said head and I JOSEPH C. SMITH,

three at the opposite end thereof. l S. M. GALLAGHER.

